debian: aptitude install sshfs > 名前のパッケージが見つかりません。 [閉じる]

適性がSSHFを見つけることができないのはなぜですか？適性を介してsshfsをインストールする方法は？要求、第三者なし。

https://packages.debian.org/en/wheezy/sshfs

私はこれを入力しました：

root@s18:~# aptitude update
Hit http://security.debian.org wheezy/updates Release.gpg
Hit http://security.debian.org wheezy/updates Release
Hit http://ftp.de.debian.org wheezy Release.gpg
Hit http://security.debian.org wheezy/updates/main Sources
Hit http://ftp.de.debian.org wheezy Release
Hit http://security.debian.org wheezy/updates/contrib Sources
Hit http://security.debian.org wheezy/updates/non-free Sources
Hit http://security.debian.org wheezy/updates/main amd64 Packages
Hit http://ftp.de.debian.org wheezy/main Sources
Hit http://security.debian.org wheezy/updates/contrib amd64 Packages
Hit http://security.debian.org wheezy/updates/non-free amd64 Packages
Hit http://ftp.de.debian.org wheezy/contrib Sources
Hit http://security.debian.org wheezy/updates/contrib Translation-en
Hit http://security.debian.org wheezy/updates/main Translation-en
Hit http://ftp.de.debian.org wheezy/non-free Sources
Hit http://security.debian.org wheezy/updates/non-free Translation-en
Hit http://ftp.de.debian.org wheezy/contrib amd64 Packages
Hit http://ftp.de.debian.org wheezy/non-free amd64 Packages
Hit http://ftp.de.debian.org wheezy/contrib Translation-en
Hit http://ftp.de.debian.org wheezy/non-free Translation-en

root@s18:~# aptitude dist-upgrade
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.

root@s18:~# aptitude install sshfs
Couldn't find any package whose name or description matched "sshfs"
Couldn't find any package whose name or description matched "sshfs"
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.

root@s18:~# cat /etc/debian_version 
7.5
root@s18:~# 

私のソース：

root@s18:~# cat /etc/apt/sources.list
deb http://ftp.de.debian.org/debian/ wheezy contrib non-free
deb-src http://ftp.de.debian.org/debian/ wheezy main contrib non-free
deb http://security.debian.org/ wheezy/updates main contrib non-free
deb-src http://security.debian.org/ wheezy/updates main contrib non-free
root@s18:~# ls /etc/apt/sources.list.d/
root@s18:~#

そして

root@s18:~# aptitude search sshfs
root@s18:~# apt-cache search sshfs       
root@s18:~# apt-get -s install sshfs
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package sshfs
root@s18:~#